Which fields are the high-strength polypropylene high-strength fibres suitable for?
The ropes and nets for construction, transportation, agriculture, fishery, and sports activities made of polypropylene high-strength fibre have high breaking strength, wear resistance, corrosion resistance, light weight and safety.
The polypropylene thread made of polypropylene high-strength fibre is mainly used for sewing woven bags, football, volleyball, baseball, and yo-yo because of its low price, high strength, anti-aging, abrasion resistance, seawater corrosion resistance, and good elasticity. Thread, cable thread, netting thread, shoe material thread, luggage thread, kite thread, twisted side thread, waste side thread, special thread for container bags, sewing thread, money binding thread, curtain thread, construction thread, engineering thread, webbing Wire, toy wire, umbrella rope wire, optical cable winding wire, fishing net wire and other industries.
What are the factors that affect the strength of polypropylene high-strength fibres?
1. The influence of melt index
The melt index of the raw material indicates to a certain extent the molecular weight of the raw material. Under the same process conditions, the amount of fiber increases. The degree of molecular entanglement is large, and the strength of the drawn fiber increases with the increase of molecular weight. When the molecular weight is low, slippage between molecular chains is easy to occur, which is manifested in the decrease of fiber strength. In the spinning process of polypropylene high-strength yarn, several raw materials with different melt indexes are used.
In the trial spinning process, it was found that under exactly the same process conditions, the melt index of the raw materials was different, and the strength of the finished yarn was different, and showed a certain regularity.
Under the same spinning temperature, the same draw ratio and the same process parameters, the lower the melt index of the polypropylene chip, the higher the strength of the polypropylene high-strength yarn.
2. The influence of stretching ratio
The stretching process of the nascent fiber is to destroy the original structure of the nascent fiber and generate a new order structure. Under the action of tensile stress and thermal effect, the activity of the macromolecular segment is increased, and various structural units slide the fiber. Axial orientation gathers, rearranges, and adds new bonding points, so that more molecular chains of the fiber are in a particularly good stress-bearing state, and the regularity of the three-dimensional structure (ie crystallization) is generated. The fiber density increases with the increase of the stretching ratio. .
As the draw ratio increases, the strength of the fiber increases, and the draw ratio makes a greater contribution to the strength of the fiber.
Jiangyin Jinmeng Textile Co., Ltd. is a professional manufacturer of high-strength polypropylene industrial yarns, engineering fibers, polypropylene high-strength yarns, woven geotextiles and polypropylene luminous yarns. It is located in Yunting City, Jiangyin City, which is adjacent to the Yangtze River in the south of Taihu Lake. The transportation is very convenient in the industrial zone.
Which fields are the high-stre
